Improvement in mill-spindles



J. M. OUISENBERRY.

Mill-Spindle.

No. 205,504. Patented July 2,1878.

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J OHN M. QUISENBERRY, OF SALEM, VIRGINIA.

IMPROVEMENT IN MILL-SPINDLES.

Specification forming part of Letters Patent No. 205,504, dated July 2,1878; application filed May 23, 1878.

To all whom it may concern:

Be it known that I, JOHN M. QUIsENBERRY, of Salem, in the county ofRoanoke and State of Virginia, have invented certain new and usefulImprovements in Mill-Spindles; and I do hereby declare that thefollowingis a full, clear, and exact description of the invention, whichwill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

This invention has relation to mill-irons for balancing the uppermillstone or runner; and consists of a balance-rynd provided with acentrally-depending pivot, in combination with a spindle stepped in thecenter of its upper end and provided with driving-arms, for the purposeof permitting the upper stone to be properly and evenly balanced anddriven above the lower stone, even when the spindle itself is out of theperpendicular, as will be hereinafter more fully described, andparticularly pointed out in the claim.

In the accompanying drawings, similar letters of reference indicate likeparts of the invention.

Figure 1 is a side elevation of my invention, partly in section. Fig. 2is a top view of the spindle.

In the old method of balancin g the upper stone the point of contactbetween the balance-rynd and the spindle was some distance within theeye of the stone, and whenever the spindle A became moved out of aperpendicular line, from any cause whatever, the upper stone would loseits balance and grind unevenly. To obviate this defect and keep thestone always in tram, I have provided the balancerynd B with thedepending pivot (l, which extends downwardly from the center of thebalance-rynd B until it is almost or quite in line with the faces of thedriving-arms D D and the grinding-face of the runner H.

'1 further provide a step or cockeye, E, in the upper end of the spindleA, at its center, and a collar, F, having the usual driving-arms D D.

The point of the pivot O rests in the step E, and a washer, G, may beemployed, if desired.

When the upper stone, H, has been properly balanced, and the spindle Ais perpendicular, the stone will, of course, run truly, even in the oldmethod; but in this construction of millirons. even ifthespindleAisseveral degrees out of perpendicular, the stone will auton'iaticallybalance properly, and will consequently run evenly, even when one of thedriving-arms 1) comes in contact with the balance-rynd B.

Having thus described my invention, what I claim as new and useful, anddesire to secure by Letters Patent of the United States, is-

The driving-spindle A, having the cockeye E and driver F, in combinationwith the runner-stone H and the balance'rynd .8, provided with thecentrally-depending balance-pivot 0, whereby the suspension and drivingpoints are brought to the line of the lower surface of the runner-stone,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereby affix mysignature in presence of two witnesses.

JOHN M. QUISENBERRY.

Witnesses:

JOHN M. Evans, F. H. CHALMERS.

